The process seen in many insects involving the pupa completely changing form into an adult is called
a. cephalization.
b. coelom formation.
c. skeletonization.
d. molting.
e. metamorphosis.
E
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When compared to the solution, the egg that gained weight was ______.
Three (3) eggs are boiled and all weigh 2g. The eggs are placed in a 15% solution of NaCl and reweighed after 30 minutes.
A. Hypertonic
B. Hypotonic
C. Isotonic
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
Gather Content
· What do you know about osmosis? What other information is related to the question?
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which event of fertilization occurs first?
A. fast block to polyspermy B. the entry of sperm DNA into the egg C. the slow block to polyspermy D. the acrosomal reaction E. the cortical reaction
Aside from the traditional hypothesis that life on Earth developed via organic compounds produced in
a reducing atmosphere, which of the following alternative hypotheses is most likely?
a. Life could have arisen from the organic compounds formed around hydrothermal vents far below the ocean floor. b. Life could have developed on another planet and was then delivered by meteorites. c. The organic compounds necessary for life were delivered to Earth by meteorites. d. Life on Earth may have arisen inside land-based volcanoes. e. The organic compounds necessary for life could only have been produced in an oxidizing atmosphere
When the force of blood on the walls of blood vessels drops below normal, the condition is referred to as
A) blood pressure. B) hypotension. C) hypertension. D) aneurysm. E) angina.